SOHO Comets 2009

The table list the provisional number for the comet, the day (UT) and month of the first (discovery) observation, the year and comet identification, the LASCO or STEREO coronagraph on which it was discovered, the discoverer (additional names are independent discoverers), with the number of their discoveries given in brackets following the name, and finally the date of discovery.

Comet Observed  Des C  G  Observers				Discovered
1598 01/01/2009 A2  C3 K  Hua Su				(January 1)
1599 01/01/2009 A3  C3 K  Hua Su				(January 1)
1600 02/01/2009 A4  C3 K  Hua Su				(January 2)
1601 02/01/2009 A5  C3 K  Hua Su				(January 2)
1602 04/01/2009 A7  C3 K  Arkadiusz Kubczak			(January 4)
0010 01/01/2009 Y17 T1 K  Alan Watson				(January 7)
0008 04/01/2009 A8  T1 K  Alan Watson				(January 7)
0009 02/01/2009 A6  T1 K  Alan Watson				(January 7)
0018 10/01/2009 A9  T1 K  Rob Matson				(January 13)
0011 10/01/2009 A1  T1 O  Alan Watson				(January 13)
0019 10/01/2009 A10 T1 K  Alan Watson				(January 13)
1603 20/01/2009 B8  C3 K  Bo Zhou				(January 21)
0012 19/01/2009 B6  T1 K  Rob Matson				(January 23)
1604 29/01/2009 B9  C3 K  Zhijian Xu				(January 29)
1605 29/01/2009 B10 C2 Y  Zhijian Xu				(January 29)
1607 30/01/2009 B11 C3 K  Tony Hoffman				(January 30)
0013 29/01/2009 B7  T1 K  Rob Matson				(February 1)
1608 04/02/2009 C3  C3 K  Rob Matson				(February 4)
1609 08/02/2009 C4  C3 K  Bo Zhou, Tony Hoffman, Michal Kusiak	(February 8)
1610 11/02/2009 C5  C3 K  Marek Kaluzny				(February 11)
0014 10/02/2009 C1  T1 K  Rainer Kracht				(February 12)
C    10/02/2009     T1 K  Rob Matson				(February 14) == SOHO 1610 
0015 11/02/2009 C2  T1 K  Karl Battams				(February 14)
1611 19/02/2009 D2  C3 K  Bo Zhou				(February 19)
1612 19/02/2009 D3  C3 K  Jiangao Ruan				(February 19)
1613 21/02/2009 D4  C3 K  Tony Hoffman, Bo Zhou			(February 21)
U    23/02/2009     C3 K  Bo Zhou				(February 23)
1614 23/02/2009 D5  C3 K  Michal Kusiak				(February 23)
1615 24/02/2009 D6  C2 Y  Rainer Kracht				(February 24)
1617 26/02/2009 D7  C3 K  Masanori Uchina			(February 26)
1616 26/02/2009 D8  C2 Y  Bo Zhou				(February 26)
1618 01/03/2009 E2  C3 K  Michal Kusiak, Bo Zhou		(March 1)
1619 08/03/2009 E3  C2 Y  Eryk Banach				(March 8)
1620 10/03/2009 E4  C3 K  Wentao Xu				(March 10)
1621 10/03/2009 E5  C2 K  Bo Zhou				(March 10)
0016 31/12/2008 Y16 T1 K  Karl Battams				(March 12)
1622 16/03/2009 F8  C3 K  Masanori Uchina			(March 16)
1623 28/03/2009 F9  C3 K  Hua Su				(March 28)
1624 30/03/2009 F10 C2 K  Masanori Uchina			(March 30)
1625 02/04/2009 G2  C2 K  Hua Su				(April 2)
1626 02/04/2009 G3  C3 K  Bo Zhou				(April 2)
1627 04/04/2009 G4  C2 K  Arkadiusz Kubczak			(April 4)
1638 28/03/2009 F6  SW O  Rob Matson				(April 6)
1628 06/04/2009 G5  C2 K  Hua Su				(April 7)
0020 05/04/2009 G1  T1 O  Jiangao Ruan				(April 8)
1629 10/04/2009 G6  C2 K  Bo Zhou				(April 10)
1630 13/04/2009 G7  C3 K  Arkadiusz Kubczak			(April 13)
1631 13/04/2009 G8  C2 O  Bo Zhou				(April 13)
1632 18/04/2009 H3  C2 K  Michal Kusiak				(April 18)
1633 20/04/2009 H4  C2 K  Michal Kusiak				(April 20)
1634 22/04/2009 H5  C2 K  Bo Zhou				(April 23)
1635 24/04/2009 H6  C2 K  Bo Zhou				(April 24)
1636 24/04/2009 H7  C2 K  Rainer Kracht				(April 24)
1637 24/04/2009 H8  C3 K  Rob Matson				(April 24)
C    01/05/1997 J6  C2 O  Rainer Kracht				(April 26)
XC70 30/04/2009     C2 K  Zhijian Xu				(April 30)
1639 03/05/2009 J1  C2 K  Masanori Uchina			(May 3)
1640 03/05/2009 J2  C2 K  Michal Kusiak				(May 3)
XC71 03/05/2009     C2 K  Michal Kusiak				(May 3)
1641 03/05/2009 J3  C3 K  Tony Hoffman				(May 3)
1642 05/05/2009 J4  C2 K  Masanori Uchina			(May 5)
1643 06/05/2009 J5  C2 K  Bo Zhou				(May 6)
1644 06/05/2009 J7  C2 K  Marek Kaluzny, Bo Zhou		(May 6)
1645 06/05/2009 J6  C2 K  Rainer Kracht				(May 6)
1646 08/05/2009 J8  C2 K  Michal Kusiak				(May 8)
1647 09/05/2009 J9  C2 K  Michal Kusiak				(May 9)
1648 13/05/2009 J11 C3 K  Bo Zhou				(May 13)
1649 11/05/2009 J10 C2 K  Rainer Kracht				(May 13)
1650 15/05/2009 J12 C2 D  Rainer Kracht				(May 15)
1651 17/05/2009 K6  C2 K  Bo Zhou				(May 17)
1652 20/05/2009 K7  C3 K  Bo Zhou				(May 20)
1653 24/05/2009 K8  C2 K  Michal Kusiak				(May 24
1654 26/05/2009 K9  C3 K  Masanori Uchina			(May 27)
U    27/05/2009     C2 K  Bo Zhou				(May 27)
1655 27/05/2009 K10 C2 K  Masanori Uchina			(May 27)
1656 29/05/2009 K11 C3 K  Masanori Uchina			(May 29)
1657 30/05/2009 K12 C2 K  Michal Kusiak, Zhijian Xu		(May 30)
1658 31/05/2009 K13 C2 K  Bo Zhou				(May 31)
1659 31/05/2009 K14 C2 K  Bo Zhou				(May 31)
1670 01/06/2009 L7  C2 K  Bo Zhou				(June 1)
1660 03/06/2009 L3  C2 K  Rainer Kracht				(June 3)
1661 03/06/2009 L4  C3 K  Bo Zhou				(June 4)
1662 04/06/2009 L5  C2 K  Rainer Kracht				(June 4)
1663 06/06/2009 L6  C3 K  Bo Zhou				(June 6)
1664 06/06/2009 L8  C2 R  Tony Hoffman				(June 7)
1665 07/06/2009 L9  C2 K  Guoyou Sun				(June 7)
1666 07/06/2009 L10 C2 K  Bo Zhou				(June 7)
1667 07/06/2009 L11 C2 K  Michal Kusiak				(June 7)
1671 08/06/2009 L12 C2 K  Masanori Uchina			(June 8)
1668 09/06/2009 L13 C2 R  Rainer Kracht				(June 9)
1669 10/06/2009 L14 C2 K  Bo Zhou				(June 10)
1672 10/06/2009 L15 C2 K  Rob Matson, Rainer Kracht		(June 10)
1673 14/06/2009 L16 C2 K  Michal Kusiak				(June 14)
1674 15/06/2009 L17 C3 K  Masanori Uchina			(June 15)
1675 21/06/2009 M1  C2 K  Bo Zhou				(June 22)
1676 22/06/2009 M2  C3 K  Michal Kusiak				(June 22)
1677 22/06/2009 M3  C3 K? Bo Zhou				(June 22) Withdrawn but confirmed.
1678 24/06/2009 M4  C2 K  Rainer Kracht				(June 24)
1677 23/06/2009 M3  C2 M? Michal Kusiak				(June 24) This had already been reported in C3 by Zhou
1679 25/06/2009 M5  C2 K  Bo Zhou				(June 25)
1680 25/06/2009 M6  C2 K  Masanori Uchina, Zhijian Xu, G Pappa	(June 25)
1681 26/06/2009 M7  C2 K  Bo Zhou				(June 27)
1682 30/06/2009 M8  C2 O  Rainer Kracht				(June 30)
1683 03/07/2009 N1  C2 O  Bo Zhou				(July 3)
1684 04/07/2009 N2  C3 K  Michal Kusiak				(July 4)
1685 05/07/2009 N3  C2 O  Bo Zhou				(July 5)
  21 18/07/2009 O1  T2 K  Michal Kusiak				(July 21)
1686 29/07/2009 O5  C3 K  Bo Zhou				(July 29)
1687 01/08/2009 P3  C3 K  Michal Kusiak				(August 1)
1688 10/08/2009 P4  C3 K  Bo Zhou				(August 10)
1689 11/08/2009 P5  C3 K  Bo Zhou				(August 11)
1690 21/08/2009 Q6  C3 K  Zhijian Xu				(August 21)
1691 22/08/2009 Q7  C3 K  Zhijian Xu, Michal Kusiak		(August 24)
1692 31/08/2009 Q8  C3 K  Masanori Uchina, Jiangao Ruan		(August 31)
1775 27/02/1999 D2  C3 K  Michal Kusiak				(August 31)
1776 28/02/1999 D3  C3 K  Michal Kusiak				(August 31)
1726 27/02/1998 D1  C3 K  Michal Kusiak				(August 31)
U    30/10/1996     C3 K  Michal Kusiak				(August 31)
1724 03/02/1997 C2  C3 K  Michal Kusiak				(August 31)
U    08/08/1996     C3 K  Michal Kusiak				(August 31)
1693 07/09/2009 R3  C3 K  Bo Zhou, Tony Hoffman			(September 7)
1730 19/01/2002 B4  C3 K  Michal Kusiak				(September 9)
1694 11/09/2009 R4  C3 K  Jiangao Ruan, Bo Zhou			(September 11)
1695 12/09/2009 R5  C3 K  Jiangao Ruan				(September 12)
1729 22/11/2001 W5  C2 K  Michal Kusiak				(September 13)
XC74 28/11/2001     C2 K  Michal Kusiak				(September 13)
1696 17/09/2009 S5  C3 K  Bo Zhou				(September 18)
1697 23/09/2009 S6  C3 K  Michal Kusiak				(September 23)
1698 25/09/2009 S7  C3 K  Rob Matson, Bo Zhou, Masanori Uchina	(September 25)
1699 26/09/2009 S8  C3 K  Michal Kusiak, Rob Matson		(September 26)
1700 27/09/2009 S9  C3 Y  Bo Zhou				(September 27)
1701 27/09/2009 S10 C3 K  Masanori Uchina			(September 27)
1702 30/09/2009 S11 C3 K  Zhijian Xu				(September 30)
1703 01/10/2009 S12 C2 K  Jiangao Ruan				(October 1)
1704 04/10/2009 T4  C2 K  Jiangao Ruan				(October 4)
1725 20/09/1997 S6  C3 K  Jiangao Ruan				(October 4)
1705 05/10/2009 T5  C3 K  Zhijian Xu				(October 5)
1706 07/10/2009 T6  C2 K  Michal Kusiak				(October 7)
1707 07/10/2009 T7  C2 K  Michal Kusiak				(October 8)
1728 20/09/1999 S8  C3 K  Jiangao Ruan				(October 8)
XC72 08/10/2009     C2 K  Hua Su				(October 8)
1708 11/10/2009 T8  C2 K  Bo Zhou				(October 11)
XC73 04/10/2009     C2 D  Bo Zhou				(October 12)
1709 12/10/2009 T9  C2 K  Bo Zhou				(October 13)
1710 14/10/2009 T11 C3 K  Bo Zhou				(October 14)
1711 14/10/2009 T12 C3 K  Shihong Yuan				(October 14)
1712 14/10/2009 T10 C3 D  Bo Zhou				(October 14)
1713 15/10/2009 T13 C3 K  Zhijian Xu				(October 15)
1714 17/10/2009 U7  C2 Y  Bo Zhou				(October 17)
1715 18/10/2009 U8  C2 K  Zhijian Xu, Jiangao Ruan		(October 18)
1716 21/10/2009 U9  C3 K  Bo Zhou				(October 21)
1717 22/10/2009 U10 C3 O  Bo Zhou				(October 22)
1718 22/10/2009 U11 C2 K  Bo Zhou, Shihong Yuan			(October 22)
1719 25/10/2009 U12 C3 K  Michal Kusiak				(October 25)
U    22/09/1999     C3 K  Jiangao Ruan				(October 28)
1720 29/10/2009 U13 C2 K  Bo Zhou				(October 29)
1721 30/10/2009 U14 C3 K  Bo Zhou				(October 30)
1727 09/09/1999 R5  C3 K  Jiangao Ruan				(October 31)
1722 02/11/2009 V3  C3 K  Jiangao Ruan				(November 2)
1723 03/11/2009 V4  C2 K  Jiangao Ruan				(November 3)
1777 25/08/1999 Q4  C3 K  Jiangao Ruan				(November 3)
1748 05/11/2009 V1  C3 K  Masanori Uchina			(November 5)
1780 05/11/2009 V2  C3 K  Masonori Uchina			(November 5)
1731 06/11/2009 V5  C3 K  Tony Scarmato				(November 6)
1778 26/07/1999 O5  C3 K  Jiangao Ruan				(November 8)
1732 13/11/2009 V6  C3 K  Zhijian Xu				(November 13)
1733 15/11/2009 V7  C3 K  Arkadiusz Kubczak			(November 15)
1734 16/11/2009 W3  C3 K  Jiangao Ruan, Bo Zhou			(November 16)
P    11/11/2009     T1 O  Alan Watson				(November 16)
1735 17/11/2009 W4  C3 K  Jiangao Ruan				(November 17)
1736 17/11/2009 W5  C3 K  Jiangao Ruan				(November 17)
1737 19/11/2009 W6  C2 K  Jiangao Ruan				(November 19)
1738 22/11/2009 W7  C3 K  Michal Kusiak				(November 22)
1739 23/11/2009 W8  C3 O  Tony Scarmato				(November 23)
1740 25/11/2009 W9  C2 K  Michal Kusiak				(November 25)
1741 25/11/2009 W10 C2 K  Michal Kusiak				(November 26)
1742 27/11/2009 W11 C2 K  Michal Kusiak				(November 27)
1743 28/11/2009 W12 C2 K  Zhijian Xu				(November 28)
1744 28/11/2009 W13 C2 K  Jiangao Ruan, Zhijian Xu		(November 28)
1745 28/11/2009 W14 C2 K  Jiangao Ruan				(November 28)
1746 29/11/2009 W15 C2 K  Masanori Uchina, Scarmato, Kaluzny	(November 29)
1747 29/11/2009 W16 C2 K  Bo Zhou				(November 29)
1749 01/12/2009 X2  C3 K  Bo Zhou, Jiangao Ruan			(December 1)
1750 01/12/2009 X3  C3 K  Tony Scarmato				(December 1)
1751 02/02/2009 X4  C2 K  Jiangao Ruan, Masanori Uchina		(December 2)
1752 04/12/2009 X5  C2 K  Masanori Uchina			(December 4)
1753 04/12/2009 X6  C2 K  Jiangao Ruan, Zhijian Xu		(December 4)
1754 04/12/2009 X7  C2 K  Rainer Kracht				(December 4)
1755 06/12/2009 X8  C2 K  Bo Zhou				(December 6)
1756 06/12/2009 X9  C3 K  Arkadiusz Kubczak, Bo Zhou		(December 6)
1757 07/12/2009 X10 C2 K  Bo Zhou				(December 7)
1758 07/12/2009 X11 C2 K  Jiangao Ruan				(December 7)
1759 08/12/2009 X12 C3 K  Masanori Uchina			(December 8)
1760 10/12/2009 X13 C3 K  Masanori Uchina			(December 10)
1761 10/12/2009 X14 C2 K  Jiangao Ruan				(December 10)
1762 13/12/2009 X15 C2 K  Michal Kusiak				(December 13)
1763 13/12/2009 X16 C3 K  Masanori Uchina			(December 13)
1764 15/12/2009 X17 C2 K  Bo Zhou				(December 15)
1765 17/12/2009 Y6  C2 K  Jiangao Ruan, Bo Zhou			(December 17)
1766 17/12/2009 Y7  C2 K  Zhijian Xu				(December 17)
1767 16/12/2009 Y5  C2 K  Hanjie Tan (1)			(December 17)
1768 17/12/2009 Y8  C2 Y  Bo Zhou				(December 18)
1769 22/12/2009 Y9  C2 K  Bo Zhou				(December 22)
0022 19/12/2009 Y3  T1 K  Alan Watson				(December 22)
0022 20/12/2009     C2 K  Masanori Uchina			(December 23)
U    20/12/2009     C2 K  Rainer Kracht				(December 23)
1770 23/12/2009 Y10 C2 R  Rainer Kracht				(December 23)
1771 25/12/2009 Y11 C3 K  Masanori Uchina			(December 25)
1772 26/12/2009 Y12 C3 K  Bo Zhou				(December 26)
1773 26/12/2009 Y13 C3 K  Bo Zhou                               (December 26)
1774 28/12/2009 Y14 C3 K  Bo Zhou				(December 28)
1779 31/12/2009 Y18 C2 Y  Jiangao Ruan, Bo Zhou			(December 31)
1781 31/12/2009 Y19 C3 K  Jiangao Ruan				(December 31)
The column headed Des is the half month or other designation of the comet. The column headed C gives the SOHO instrument (C2 or C3 for the LASCO coronagraphs, SW for SWAN, T1 or T2 for STEREO) that the comet was discovered in. The column headed G indicates if it is a provisional member of the Kreutz group (K), Meyer group (Y), Marsden group (D), Kracht (R) or other comet (O). P in the SOHO number column indicates the discovery is pending, C indicates that it is confirmed, but not yet numbered, U indicates that is was not confirmed, X that it was confirmed, but there were insufficient observations. Numbers after 1730 should be regarded as provisional, but have been confirmed.

Note that my observer count also includes X/ comets which are not counted as confirmed comets by the SOHO team. Where two or more people report discoveries nearly simultaneously, up to the first three observers are credited here. Where discoverers are clearly not following the SOHO or BAA Comet Section guidelines, they are not credited here at all. If initial reports don't include sufficient positions others may also be credited.

Official milestones:
SOHO 1600 - January 2
Hua Su 200 - SOHO 1600 Meyer 100 - March 8
SOHO 1700 - September 27
Bo Zhou > 150 - October
1767 - Hanjie Tan was aged 13

It is possible that there are further comets to be found in the archival data, most likely non-group comets, but there may still be some Kreutz comets.


Published by Jonathan Shanklin. Jon Shanklin - jds@ast.cam.ac.uk